package it.afs.persist.hibernate;

import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

/**
 * Hibernate utils class to manage sessions
 * @author af
 *
 */
public class HibernateUtils
{
	private static final SessionFactory sessionFactory = buildSessionFactory();

	/**
	 * Singleton to build the {@link SessionFactory} from hibernate.cfg.xml file
	 * @return
	 */
    private static SessionFactory buildSessionFactory()
    {
        try {
            // Create the SessionFactory from hibernate.cfg.xml
            return new Configuration().configure().buildSessionFactory();
        }
        catch (Throwable ex) {
            // Make sure you log the exception, as it might be swallowed
            System.err.println("Initial SessionFactory creation failed." + ex);
            throw new ExceptionInInitializerError(ex);
        }
    }

    public static SessionFactory getSessionFactory() {
        return sessionFactory;
    }
}